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rt-thread/bsp/raspberry-pi/raspi3-64/driver/mbox.c

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/*
* File : mbox.c
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-08-29 zdzn first version
*/
/* mailbox message buffer */
#include "mbox.h"
#include "mmu.h"
//volatile unsigned int __attribute__((aligned(16))) mbox[36];
volatile unsigned int *mbox = (volatile unsigned int *) MBOX_ADDR;
/**
* Make a mailbox call. Returns 0 on failure, non-zero on success
*/
int mbox_call(unsigned char ch, int mmu_enable)
{
unsigned int r = (((MBOX_ADDR)&~0xF) | (ch&0xF));
if(mmu_enable)
r = BUS_ADDRESS(r);
/* wait until we can write to the mailbox */
do
{
asm volatile("nop");
} while (*MBOX_STATUS & MBOX_FULL);
/* write the address of our message to the mailbox with channel identifier */
*MBOX_WRITE = r;
/* now wait for the response */
// rt_kprintf("mailbox request %x\n",r);
while(1)
{
/* is there a response? */
do
{
asm volatile("nop");
} while (*MBOX_STATUS & MBOX_EMPTY);
/* is it a response to our message? */
if (r == *MBOX_READ){
/* is it a valid successful response? */
// rt_kprintf("mbox: %x, %x, %x, %x, %x, %x, %x, %x\n", mbox[0], mbox[1], mbox[2], mbox[3], mbox[4], mbox[5], mbox[6], mbox[7]);
return mbox[1] == MBOX_RESPONSE;
}
}
return 0;
}
int bcm283x_mbox_hardware_get_model(void)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_HARDWARE_GET_MODEL;
mbox[3] = 4; // buffer size
mbox[4] = 0; // len
mbox[5] = 0;
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
return mbox[5];
}
int bcm283x_mbox_hardware_get_revison(void)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_HARDWARE_GET_REV;
mbox[3] = 4; // buffer size
mbox[4] = 0; // len
mbox[5] = 0;
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
return mbox[5];
}
int bcm283x_mbox_hardware_get_mac_address(uint8_t * mac)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_HARDWARE_GET_MAC_ADDRESS;
mbox[3] = 6; // buffer size
mbox[4] = 0; // len
mbox[5] = 0;
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
char * mac_str = (char *)&mbox[5];
mac[0] = mac_str[0];
mac[1] = mac_str[1];
mac[2] = mac_str[2];
mac[3] = mac_str[3];
mac[4] = mac_str[4];
mac[5] = mac_str[5];
return 0;
}
int bcm283x_mbox_hardware_get_serial(rt_uint64_t* sn)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_HARDWARE_GET_SERIAL;
mbox[3] = 8; // buffer size
mbox[4] = 0; // len
mbox[5] = 0;
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
sn = (rt_uint64_t *)&mbox[5];
return 0;
}
int bcm283x_mbox_hardware_get_arm_memory(rt_uint32_t * base, rt_uint32_t * size)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_HARDWARE_GET_ARM_MEMORY;
mbox[3] = 8; // buffer size
mbox[4] = 0; // len
mbox[5] = 0;
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
*base = mbox[5];
*size = mbox[6];
return 0;
}
int bcm283x_mbox_hardware_get_vc_memory(rt_uint32_t * base, rt_uint32_t * size)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_HARDWARE_GET_VC_MEMORY;
mbox[3] = 8; // buffer size
mbox[4] = 0; // len
mbox[5] = 0;
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
*base = mbox[5];
*size = mbox[6];
return 0;
}
int bcm283x_mbox_clock_get_turbo(void)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_CLOCK_GET_TURBO;
mbox[3] = 8; // buffer size
mbox[4] = 4; // len
mbox[5] = 0; // id
mbox[6] = 0; // val
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != 0)
{
return -1;
}
return mbox[6];
}
int bcm283x_mbox_clock_set_turbo(int level)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_CLOCK_SET_TURBO;
mbox[3] = 8; // buffer size
mbox[4] = 8; // len
mbox[5] = 0; // id
mbox[6] = level ? 1 : 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != 0)
{
return -1;
}
return mbox[6];
}
int bcm283x_mbox_clock_get_state(int id)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_CLOCK_GET_STATE;
mbox[3] = 8; // buffer size
mbox[4] = 4; // len
mbox[5] = id; // id
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != id)
{
return -1;
}
return (mbox[6] & 0x3);
}
int bcm283x_mbox_clock_set_state(int id, int state)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_CLOCK_SET_STATE;
mbox[3] = 8; // buffer size
mbox[4] = 8; // len
mbox[5] = id; // id
mbox[6] = state & 0x3;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != id)
{
return -1;
}
return (mbox[6] & 0x3);
}
int bcm283x_mbox_clock_get_rate(int id)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_CLOCK_GET_RATE;
mbox[3] = 8; // buffer size
mbox[4] = 4; // len
mbox[5] = id; // id
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != id)
{
return -1;
}
return mbox[6];
}
int bcm283x_mbox_clock_set_rate(int id, int rate)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_CLOCK_SET_RATE;
mbox[3] = 8; // buffer size
mbox[4] = 8; // len
mbox[5] = id; // id
mbox[6] = rate;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != id)
{
return -1;
}
return mbox[6];
}
int bcm283x_mbox_clock_get_max_rate(int id)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_CLOCK_GET_MAX_RATE;
mbox[3] = 8; // buffer size
mbox[4] = 4; // len
mbox[5] = id; // id
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != id)
{
return -1;
}
return mbox[6];
}
int bcm283x_mbox_clock_get_min_rate(int id)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_CLOCK_GET_MIN_RATE;
mbox[3] = 8; // buffer size
mbox[4] = 4; // len
mbox[5] = id; // id
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != id)
{
return -1;
}
return mbox[6];
}
int bcm283x_mbox_power_get_state(int id)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_POWER_GET_STATE;
mbox[3] = 8; // buffer size
mbox[4] = 4; // len
mbox[5] = id; // id
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != id)
{
return -1;
}
return (mbox[6] & 0x3);
}
int bcm283x_mbox_power_set_state(int id, int state)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_POWER_SET_STATE;
mbox[3] = 8; // buffer size
mbox[4] = 8; // len
mbox[5] = id; // id
mbox[6] = state & 0x3;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != id)
{
return -1;
}
return (mbox[6] & 0x3);
}
int bcm283x_mbox_temp_get(void)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_TEMP_GET;
mbox[3] = 8; // buffer size
mbox[4] = 4; // len
mbox[5] = 0; //id
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != 0)
{
return -1;
}
return mbox[6];
}
int bcm283x_mbox_temp_get_max(void)
{
mbox[0] = 8*4; // length of the message
mbox[1] = MBOX_REQUEST; // this is a request message
mbox[2] = MBOX_TAG_TEMP_GET_MAX;
mbox[3] = 8; // buffer size
mbox[4] = 4; // len
mbox[5] = 0; // id
mbox[6] = 0;
mbox[7] = MBOX_TAG_LAST;
mbox_call(8, MMU_DISABLE);
if(mbox[5] != 0)
{
return -1;
}
return mbox[6];
}
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